Nobody is giving people at a government agency the authority to write arbitrary fines, there’s going to be at minimum guidelines.

If the base fine is X, then every actual fine would be X + Y where Y is the profit motive causing the behavior. As such every court case is now also a fight about lowering Y and companies are incentivized to make Y appear lower etc.

Further as companies vary in size generally at large companies Y will be vastly larger than X meaning lowering Y is nearly as valuable at winning.